Left 4 Dead 2

New to L4D and will be playing coop with my cousins when they come over today. I have been asked to host and we were thinking of just doing a 4player campaign. But since I'm new, can someone suggest any tips, tricks, maps, mods or gamemodes that would make our experience really fun and not too hard/complex? We are pretty much new at this.

Some basics:1. Don't do any difficulty higher than normal for your first run, you will probably get destroyed in the 2 higher levels (advanced might be possible if you're good at FPS in general, but expert you should know the game more before jumping in)2. With most special infected shove them, it's typically faster than shooting. The only exceptions are charger, tank and witch. 3. As far as game modes go, stick to campaign or survival for now. Leave modes like versus alone until you're more experienced.4. Maps you might as well go in order which is, No Mercy-> Crash Course-> Dead Air-> Blood Harvest -> The Sacrifice -> Dead Center - > The Passing-> Dark Carnival -> Swamp Fever-> Hard Rain->The Parish. You can throw in Cold stream at any point since it's disconnected from the rest. 5. Stick together although try not to stand on top of one another. Maintaining line of sight with your friends is usually enough unless a smoker or Jockey pulls them behind a corner. 6. Try to only use health kits once your health has gone red or you went down. Prioritize healing people that have gone down at least once.7. As far as mods go, Look at the most popular maps and give them a try when you finish the official maps.